Gas-producer.



W. B. CHAPMAN.

GAS PRODUCER. APPLlCATlON FILED MAY 3. 1912.

Patented June & 1915.

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4 SHEETSSHEET l- W. B. CHAPMAN.

GAS PRODUCER.

APPLICATION FILED MAY 3. i912.

4 SHEETS-SHEET 2.

. B. CHAPMAN.

GAS PRODUCER. APPLICATION FILED MAY 3, 1912.

Patented June 8, 1915.

4 SHEETS-SHEET 3.

Q Ma) W. B. CHAPMAN.

GAS PRODUCER. APPEICATION HLED MAY3, 1912.

u ran srarns ra'rnn'r orruon WILLIAM BREWSTER CHAPMAN, OF NEW YORK, N. Y., ASSIGNOR TO CHAPMAN ENGINEERING COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW Patented June 8, 1915.

Application filed May 3, 1912. I Serial No. 694,855.

YORK.

cas-rnonncnn;

1,142,144; Specification of Letters Patent.

To all whom it may concern:

Be it known that I, VILLIAM B. CHAP- MAN, a citizen of the United States, and a resident of the city, county, and State of New York, have made a new and useful Improvement in Gas-Producers, of which the following is a specification.

My invention relates to producers which burn quantities of coal with an incomplete consumption so as to form large volumes of fuel gas. In furnaces of this type, air and steam are blown'in from the bottom and gas escapes from the top and great trouble is experienced because blow holes. will form through the fuel so that the consumption is irregular, the gas is mixed with air and so the gas produced is somewhat irregular and not homogeneous. culty various devices have been made by which the fuel has been tamped or parts of the furnace have been revolved or stirrers have been put in the fuel and moved while therein. In all these devices heretofore made,

various troubles have existed. In none of them has a stirring device been passed through the fuel and immediately followed by fresh fuel so that its wake is filled and the fuel level'always maintained.

The object of my invention is to provide just such a device, so that at all times the fuel level will be maintained, blow holes will be eliminated and a uniform and homogeneous gas output will be obtained.

For a more particular description of my invention, reference is to be had to the accompanying drawings, forming a part hereof, in which- Figure 1 is a to plan view of a furnace provided with my invention; Fig; 2 is a vertic al transverse section through t e producer shown in Fig. 1; Fig. 3 is a vertical transverse section of a modified form of the producer, and Fig. 4 is a top plan view of the structure shown in Fig. 3.

Throughout the various views of the drawings, similar reference characters designate similar'parts.

In Figs. 1 and 2 the furnace- 1 is fixed and has a rotary top 2 and in Figs. 3 and 4 the body of thefurnace 3 rotates and the top t is fixed. As will appear below, my invention may be applied to either formof furnace with equal facility.

to Figs. 1 and 2, the furnace Referring 5 provided rests on asiiitable foundation provided with any suitable To overcome this diili-' with the usual ash pit 6, which is watertight and provided with water in .the conand this ash pit 6 may be means, not shown, for removing the ashes. lVater formsthe usual seal which is common in this class of structures. In the center is provided a suitable twyer pipe 7 which has a hood 8, which permits air and steam to escape intothe fuel 9 in the usual manner. The gas which is generated by the apparatus escapes through a suitable flue 10. The body of the furnace is of the usual form and construction.

The upper end of the furnace 1 is providcd with the usual water seal 11. The top 2 is also of the usual ,form and provided with a water jacket 12 and is mounted to revolve about its vertical axis on suitable rollers 13. Any rotating means 13 maybe employed. i

The top ventional manner,

2 carries-a coat hopper 14 which is of the usual formexcept that it starts at one side and is inclined so as to have'its upper portion concentric with the axis of the top 2. This hopper 14; has a cover 15, made and secured in any suitable we and projecting below this is an annular disk 16 that covers an annular trough 17 that surrounds the top of the hopper 14:. This trough 17 receives water from any suitable pipe 18 and drains into a U pipe 19 which first runs vertically, thence horizontally, and then downwardly to the edge of the furnace and through the water jacket 12, and thence along the fuel chamber 20 to the bottom thereof, and then downwardly and rearwardly to well below the level of the fire bed, and thence horizontally, or nearly so, to about the vertical axis of the top 2, when it ends in the water jacket, 12, just under a baflie plate 21, which prevents any sediment from falling in the pipe 19 and also prevents any steam from escaping through the water jacket. The disk 16 protects the trough 17 and prevents any coal from falling therein. Steam will not get into this trough because the exit to thewater jacket is shorter. The pipe 19 is anagitatoror slicing bar which is always. water-cooled and so kept from burning, the cooling water passing continually from the trough 17 through the pipe 19 to'the jacket 12. The coal hopper h sea wa i t? e fuel phanlberilt), which isnlaced atpne side.

is flattened, extends to the outer edge, and across to the axis of rotation, and even beyond, at the level of the fuel bed. It has a beveled lower edge 23 on its rear side, which is preferably water-cooled, so that when the device is in use, a fuel supply always fol lows in the wake of the agitator 19 and fills the same with fresh fuel, so that the level. of the fire bed is maintained and the fuel is somewhat compressed. The edge 23 is upwardly turned near its outer end, so as to make a thicker fire bed next the body 1, and so prevent the improper escape of air, steam or gases at this part.

The inclination of the pipe 19 when near thebody l prevents accummulation of fuel in front of this pipe. If desired, the fuel chamber 20 may have less than four walls, as even one wall will answer, but it is preferable to have four, to insure the placing of the fuel evenly and at the right place and time and pressure. The same result is' ob,- tained by the structure in Figs. 3 and 4.

Here the body 3 rotates and the top 1 is This body 3 also carries an ash plow 27 and a shelf 28 to catch the ashes raised more than a certain amount by the plow, and these ashes are swept off of this shelf by a sweeper, not shown. 7

Air and steam enter through the hood 8 of the twyer 7, pass through the fuel 9, which is keptlevel, compressed and homogeneous as above described, and finally out through the flue 10 in the cover 11'.

In View of the foregoing the operation of the embodiment of my invention shown in Figs. 1 and 2 will be readily understood. Assuming the parts to be as shown in Figs. 1 and :2, the fire burning in the conventional manner and fuel supplied in the usual Way through the hopper 14 and by the bell 22 to the interior of the fuel chamber 20, and water to be flowing as above described, and the top to be turning about its axis at a slow rate of speed. The small blow holes which form from time to time are closed by the slicing action of the agitator 19, which is always kept water-cooled, and the wake of this agitator is always kept closed by fresh fuel supply which follows and is pressed down so that the fuel level is always maintained and the products of combustion escape in a homogeneous and uniform manner, so thata good gas is always produced and all blow holes are eliminated as fast as they tend to form. The same identical re- I 1. A gas producer having means for carrying the body of burning fuel, means for supplying to and maintaining on said burning fuel a body of fresh fuel, means for bringing about relative motion of said bodies of fuel whereby the burning fuel is pressed and the fresh fuel spread over the same, and an agitator working in the burning fuel below the top surface thereof, and in the vertical line of said body of unburned fuel.

:2. A gas producer having a body to con? tain the burning fuel, an eccentrically located chamber to contain a supply -,of fresh fuel, said chamber open at its bottom to allow the fresh fuel to bear on. the burn:

' ing fuel, means for moving one of said parts relatively to the other and an agitator working in the burning fuel below the upper surface thereof, said agitator located in the vertical line of the chamber.

'1. gas producer having a body to contain the burning fuel, an eccentrically located chamber to contain a supply of fresh fuel, said chamber open at its bottom to allow the fresh fuel to bear on the burning fuel, means for moving one of said parts relatively to the other and an agitator having a substantially horizontal portion working in the burning fuel below and in vertiw cal line with the said chamber.

4, A gas producer having means for carrying the body of burning fuel, .means for supplying to and maintaining on said burning fuel a body. of fresh fuel, means for bringing about relative motion of said bodies of fuel. whereby the burning fuel is pressed and the fresh fuel spread over the same, and a U-shaped agitator extending into the burning fuel under the said body of fresh fuel.

5.1 1 gas producer having means for carrying the body of burning fuel, means for supplying to and maintaining on said burning fuel a body of fresh fuel, means for bringing about relative motion of said bodies of fuel, whereby the burning fuel is pressed and the fresh fuel spread over the same, and a U-shaped agitator extending into the burning fuel under the said body of fresh fuel, the agitator having its bend, or middle portion working substantially horizontally in the burning fuel.

6.-A gas producer having a body to contain the burning fuel, an agitator in the body and having a portion disposed horizontally in the burning fuel, means for causing relative motion between said horizonta portion of the agitator and the burning fuel, means over the agitator to supply fresh fuel, whereby the fresh fuel fills the In testimony whereof, I have signed my 10 depression formed by the action of the aginame to this specification in the presence of tutor. two subscribing Witnesses, April, 1912.

7. A gas producer having a U-shaped agi- 5 tator with its bend or horizontal portion WILLIAM BREWSTER CHAPMAN. [Ins-1 embedded in the burning fuel and its vertic! limbs joined to a supporting means Witnesses:

and means for causing relative motion be 0. E. EDWARDS, Jr., tween the agitator and the burning fuel. KATE ROSENBERG. 

